package main

import (
	"context"
	"fmt"
	"os"

	"demo/helloworld"
	"demo/pkg/tracex"

	"github.com/go-kratos/kratos/v2/log"

	"github.com/go-kratos/kratos/v2"
	"github.com/go-kratos/kratos/v2/middleware/recovery"
	"github.com/go-kratos/kratos/v2/middleware/tracing"
	"github.com/go-kratos/kratos/v2/transport/grpc"
)

// go build -ldflags "-X main.Version=x.y.z"
var (
	// Name is the name of the compiled software.
	Name = "helloworld"
	// Version is the version of the compiled software.
	// Version = "v1.0.0"
)

// server is used to implement helloworld.GreeterServer.
type server struct {
	helloworld.UnimplementedGreeterServer
}

// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(_ context.Context, in *helloworld.HelloRequest) (*helloworld.HelloReply, error) {
	//if in.Name == "error" {
	//	return nil, errors.BadRequest("custom_error", fmt.Sprintf("invalid argument %s", in.Name))
	//}
	//if in.Name == "panic" {
	//	panic("server panic")
	//}
	return &helloworld.HelloReply{Message: fmt.Sprintf("Hello %+v", in.Name)}, nil
}

func main() {
	logger := log.NewStdLogger(os.Stdout)
	logger = log.With(logger, "trace_id", tracing.TraceID())
	logger = log.With(logger, "span_id", tracing.SpanID())
	logg := log.NewHelper(logger)

	url := "http://jaeger:14268/api/traces"
	if os.Getenv("jaeger_url") != "" {
		url = os.Getenv("jaeger_url")
	}
	err := tracex.SetJaegerServerTracer("demo", "local", url)
	if err != nil {
		logg.Error(err)
	}

	s := &server{}
	grpcSrv := grpc.NewServer(
		grpc.Address(":9000"),
		grpc.Middleware(
			recovery.Recovery(),
			tracing.Server(),
		),
	)
	helloworld.RegisterGreeterServer(grpcSrv, s)

	app := kratos.New(
		kratos.Name(Name),
		kratos.Server(
			grpcSrv,
		),
	)

	if err := app.Run(); err != nil {
		log.Fatal(err)
	}
}
